CVE-2021-37172

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-830194.pdf	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:h:siemens:cpu_1211c:-:::::::*
	cpe:2.3:h:siemens:cpu_1212c:-:::::::*
	cpe:2.3:h:siemens:cpu_1212fc:-:::::::*
	cpe:2.3:h:siemens:cpu_1214c:-:::::::*
	cpe:2.3:h:siemens:cpu_1214fc:-:::::::*
	cpe:2.3:h:siemens:cpu_1215c:-:::::::*
	cpe:2.3:h:siemens:cpu_1215fc:-:::::::*
	cpe:2.3:h:siemens:cpu_1217c:-:::::::*

cpe:2.3:o:siemens:simatic_s7-1200_cpu_firmware:4.5.0:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-08-10 11:15

Updated : 2022-07-01 17:44

NVD link : CVE-2021-37172

Mitre link : CVE-2021-37172

CVE.ORG link : CVE-2021-37172

JSON object : View

Products Affected

siemens

simatic_s7-1200_cpu_firmware
simatic_step_7_\(tia_portal\)
cpu_1217c
cpu_1214c
cpu_1211c
cpu_1215c
cpu_1215fc
cpu_1212fc
cpu_1212c
cpu_1214fc

CWE

CWE-287

Improper Authentication

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